Examine source code of DoverGroup

{
  "theme": {
    "images": {
      "theme_frame": "DoverGroup_FirefoxPersonaHeader.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "DoverGroup",
  "manifest_version": 2,
  "description": "<a href=\"https://outgoing.prod.mozaws.net/v1/dc9cee3092f86c90ed59d8f63aa83a15f5a980cc9305f56b4be95b0343bd2837/http%3A//www.doverstrategygroup.com\" rel=\"nofollow\">www.doverstrategygroup.com</a>"
}